Systems and methods for generating compensated speed values for doppler-enabled device
    1.
    发明授权
    Systems and methods for generating compensated speed values for doppler-enabled device 有权
    用于产生多普勒启用设备的补偿速度值的系统和方法

    公开(公告)号:US09164179B2

    公开(公告)日:2015-10-20

    申请号:US13666572

    申请日:2012-11-01

    IPC分类号: G01S19/52 G01S11/10

    CPC分类号: G01S19/52 G01S11/10

    摘要: Implementations relate to systems and methods for generating compensated speed values for a Doppler-enabled device. A portable wireless device can contain a GPS navigation engine (110) to capture position data (120) and Doppler speed data (118) from positioning satellites. The device can also generate position-based speed values from successive position readings and time intervals, to determine the current speed independently of the Doppler-based speed values. During degraded signal conditions, the Doppler-based speed values can drop to invalid levels. The device incorporates a combiner module (450) which compares the position-based and Doppler-based speed values and performs combination operations on those quantities to produce a compensated speed value (490). By selecting the maximum or otherwise combining those values, extreme excursions in speed values are avoided and accuracy promoted.

    摘要翻译: 实现涉及用于产生多普勒启用设备的补偿速度值的系统和方法。 便携式无线设备可以包含用于从定位卫星捕获位置数据(120)和多普勒速度数据(118)的GPS导航引擎(110)。 该设备还可以从连续的位置读数和时间间隔生成基于位置的速度值,以独立于基于多普勒的速度值来确定当前速度。 在恶化的信号条件下,基于多普勒的速度值可能下降到无效级别。 该装置包括组合器模块(450),该组合器模块比较基于位置和多普勒的速度值,并对这些量执行组合操作以产生补偿速度值(490)。 通过选择最大值或以其他方式组合这些值,避免了速度值的极端偏移,提高了精度。